The section provides insights into key business requirements across three industry-specific case studies: e-commerce, healthcare, and banking. In e-commerce, the business requirements for the shopping cart system emphasize usability, dynamic updates, and integration with payment gateways. The healthcare appointment system focuses on patient-doctor interaction, regulatory compliance, and automated reminders. Meanwhile, the banking case study on loan applications addresses risk analysis, data privacy, and integration with credit bureaus. Stakeholders involved in these projects are identified, alongside the specific activities business analysts need to undertake, including gathering user stories, defining functional and non-functional requirements, and conducting user acceptance testing (UAT). This understanding enhances a business analyst's ability to succeed by framing their work within the broader context of industry operations and stakeholder needs.